Friction transmission-gearing.



J. W. & J. HAYWOOD.

FRICTiION TRANSMISSION GEARING.

APPLICATION FILED FEB. 20, 1912.

Patented Mar. 21,1916.

ATTORNEYS ilNiTE JOHN W. I-IAYWOODAND JOHN HAYWOOD, 0E NEWARK, NEVJ' YOBKtSAID JOHN VI. HAYWOOD ASSIGNOR TO SAID JOHN HAYWOOD.

FRICTION TBANSMISSION-GEARING.

Specification of Letters Patent.

Application filed February 20, 1912. Serial No. 678,829.

To all whom it may concern:

Be it known that we, JOHN W. HAYWOOD and JOHNv HAYWOOD, of Newark, in the county of lVayne and State of New Yor have invented a certain new and useful Friction Transmission-Gearing, of which the following is a specification.

This invention has for its object the production of a friction transmission gearing which is particularly simple in construction, highly efficient and durable in use, and it consists-in the combinations and constructions hereinafter set forth and claimed.

"in describing this invention reference is had to the accompanying drawing in which like. characters designate corresponding parts in all the views.

Figure 1 is a vertical sectional view of a gearing embodying our invention. Fig. 2 is an elevation ofa modified form of our invention, the casing and other parts being removed. Fig. 3 is a fragmentary view illustrating one of the bearings for the rod supporting the shiftable pinion.

This transmission gearing comprises, generally, driving and driven rotary elements arranged with opposing portions of their peripheries in parallelism, one of said elements being conical, and a friction pinion interposed between and engaging the parallel portions of the peripheries and being shiftable axially to produce diiferent speeds.

'1 and 2 are respectively driving and driven rotary elements which are mounted respectively on shafts 3, 4, journal'ed in'suitable bearings carried by opposite end walls of the inclosing case 5, one of said elements 1, 2 and preferably both being'conical, and reversely arranged with respect to each other with opposing portions of their peripheries in parallelism.

6 is a frictionpinion interposed between and engaging the-parallel portions of the elements 1, 2, the pinion being mounted on a supporting or guide rod 7 engaged at its opposite ends with bearings 8 in opposite end walls of the case 5, said pinion being shiftable axially along said rod 7, in order to change the ratio of speed between the driving and driven elements. The bearings for the rod 7 are preferably elongated in a plane intersecting the axes of elements 1 and 2 and pinion 6, Fig. 3, for premitting movement of the rod laterally relatively to its axis, in order to take up the wear on its periphery.

Preferably one of the elements 1, 2 is shiftable for disengaging its periphery from the friction pinion 6 preliminary to the shifting of such pinion, and as here shown one of such elements, as the driving element 1 is shiftable axially, on the shaft 3 and is normally pressed axially in one direction by a spring 9 for the purpose of holding its periphery in frictional engagement with the pinion 6 and automatically adjusting the element 1 t0 the lateral adjustment of the pinion in engagement with the shift the conical element 1. Antifriction thrust members 12,are interposed between the collar 10 and a bearing plate 13 fixed in the recess 11 and rotatable with the cone 1.

One of the elements 1, 2 here shown as the driven element 2, is formed with a circumferential depressed portion 14 near one end, such depressed portion operating to permit the pinion 6 to be disconnected from the driven element when shifted into a position opposite to the depressed portion, such depressed portion being of greater width than the periphery of the pinion.

Our transmission gearing also comprises reverse mechanism which preferably includes intermeshing spur gears. Said reverse mechanism comprises preferably means as a spur gear 15 associated with the shiftable pinion 6 and a toothed idler 16 carried by the stud 17 fixed in one end wall of the case, the idler 16 being permanently in mesh with a spur gear 18 associated with the cone 2 and located near the larger end thereof. Said idler isarranged to mesh with the gear 15 when the pinion 6 is shifted Patented iviar. at, rate.

rotatable about parallel axes, and in Fig. 2, is illustrated a construction in which the driving element 19 is a cylinder and the driven element 20 is a cone mounted on a shaft Qlarranged slightly inclined relatively to the axis of the cylinder 19 in order to bring opposing portions of the peripheries of the cylinder 19 and cone 20 in parallelism.

In operation the pinion 6 may be shifted able pinion is disconnected fromthe driving element while such pinion is being shifted, the wear of the friction surfaces of the arts is automatically taken up, and further owing to the fact that the parts can be relieved of friction as by moving the driving element axially, the transmission mechanism performs the function of the disk or main clutch now usually embodied in automobiles. What we claim is zj 1. A friction transmission gearing com prising a driven rotatable element, a driving shaft, a driving element mounted on the shaft for rotation therewith and having independent movement axially thereof, the driving and driven elementshaving opposing peripheral surfaces disposed in parallelism, and the driving element being of conical form, a friction pinion interposed between and engaging parallel portions of thesurfaces of said elements and being shiftable axially, a spring tending to move the driving element in a direction to reduce the distance between theparallel portions of the surfaces of said elements and manual means for shifting the driving element in a reverse direction, substantially as and for the purpose described.

2. A friction transmission gearing comprising driving and driven rotatable elements arranged with opposing portions of their peripheries in parallelism, one of said elements being conical, a friction pinion interposed between and engaging the parallel portions of the peripheries of said elements and being shiftable axially, the conical element'being also manually shiftable axially in one direction for moving its periphery out'ofengagement with the pinion, and a spring tending to move saidconical element axially in the opposite direction for holding its perlphery in engagement with the pinion,

substantially as and for the. purpose set forth. 7 7' V 3. A friction transmissiongearmg comprising driving and driven reversely I ar-' tone direction, substantially as and-for the purpose specified.

. f. A friction transmission gearing (10113 prising driving 'andrdriven rotatable ele; ments arranged with opposingportions'of their peripheries in parallelism, a friction pinion interposed between and engaging the parallel portions ofthe peripheries of said elements and being shiftable axially, and reversing means comprising an idler normally engaged with one of saidcelements and arranged in position tobe engaged by the pinion, substantially as and forthe purpose specified. r e

5. A friction transmission gearing coniprising driving and driven rotatable elements arranged with opposing portions of their peripheries in parallelism, one of said elements being conical, and a friction pinion interposed between and engaging the parallel portionsof the peripheries .of said elements and being shiftable axially, and reloo versing means comprising a spur gear associated with the pinion, and an idler gear connected to one of said elements, the pinion being shiftable for moving the spurgear associated therewith into and'out of mesh with the idler, substantially as purpose set forth. V

' 6. A friction transmission gearing comprising driving and driven rotatable eleand for the V ments arranged with opposing portions of their peripheries in parallelism, one of said elements being conical and formed with a circumferential depressed portion, and a friction pinion interposed betweenand engaging the parallel portions of the peripheries of said elementsand being shiftable axially, the friction surface of the pinion being of less width than said depressed portion, and the pinion being disconnected from the conical element whenlthe friction pinion is shifted into aposition opposed tothe depressed portion,.and reversing meanscomprising means associated with the pinion, and anidler engaging with the conical element and adapted to engage said means, the

idler being arranged to engage said means associated with the pinion when the shiftable pinion is opposed to said depressed portion, substantially as and for the purpose described.

7 A. friction transmission gearing comprising driving and driven rotatable elements, arranged with portions of their peripheries in parallelism, one of said elements being conical and one element being shiftable for changing the distance between the peripheries of the elements, and a friction pinion interposed between and engaging the parallel portions of the peripheries of said elements and being shiftable axially, the pinion being automatically adjustable in a direction at an angle to its axis for taking up wear due to the frictional engagement with the driving and driven elements, substantially as and for the purpose set forth.

8. A friction transmission gearing comprising driving and driven rotatable elements arrangedwith opposing portions of their peripheries in parallelism, one of said elements being conical and shiftable for reducing the distance between opposing portions of the peripheries of said elements, a rod interposed between said elements, bearingsfor the rod constructed to permit lateral movement of the rod relatively to the opposing portions of the peripheries of said elements, and a fri tion pinion mounted on the rod and engaging the parallel portions of the peripheries of said elements and being shiftable axially of the rod, substantially as and for the purpose described.

9. A friction transmission gearing comprising driving and driven rotatable elements arranged with portions of their peripheries in parallelism, one of said elements being conical and manually shiftable axially in one direction, a spring for shifting the same axially in the oppositedirection, and the conical element being normally under tension of the spring, and a friction pinion interposed between and engaging the parallel portions of the peripheries of said elements and being shiftable axially, substantially as and for the purpose described.

10. A friction transmission gearing comprising driving and driven elements arranged with opposing portions of their peripheries in parallelism, one of said elements being conical and shiftable axially a friction pinion interposed between and engaging the parallel portions of the peripheries of said elements and being shiftable axially, and a spring tending to shift the conical element axially in one direction, substantially as and for the purpose described.

11. A friction transmission gearing comprising driving and driven elements arranged with opposing portions of their en gaging surfaces in parallelism, one of said elements being conical, a rod interposed between said elements, a friction pinion mounted on the rod and engaging the parallel portions of the surfaces of said elements, the pinion being shiftable axially and the rod being mounted to have a limited lateral movement to compensate for wear on said elements and the pinion, and the conical element being freely shiftable axially, and a spring for pressing the conical element in one direction to hold the same in engagement with the pinion and the pinion in engagement with the other element, substantially as and for the purpose described.

In testimony whereof, we have hereunto signed our names in the presence of two attesting witnesses, at Newark, in the county of .Vayne, in the State of New York, this lath day of February, 1912.

J OHN JV. HAYWOOD JUHN HAYWOOD.

.Vitnesses HENRIETTA VosBnncH, GORDON G. HARRIS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

